1 definition by MajinVegeta
When a guy goes down on a latin girl and she can't control herself, causing her to "jump" around uncontrollably. Can also refer to a vibrator called The Bean
Guy 1: I ate out Maria last night and she started shaking around so much I had to slow down.
Guy 2: Thats what you call a Mexican jumping bean
Guy 2: Thats what you call a Mexican jumping bean
by MajinVegeta May 26, 2013